Toilet bowl ventilator



April 14, 1942. H. JENTzr 2,279,789

TOILET BGWL VENTILATOR Filed Sept. 16, 1940 #Wy Jfffffgm l BY mja/wwf@ ATTORNEYS Patented Apr. 14, 1942 "UNITED STATT;

s PATENT OFFICE 3 Claims.

This invention relates to toilet bowl ventilators, and its general object is to provide an automatic apparatus that is rendered active, for

the seat of the latter is occupied, and for that purpose, the apparatus includes a seat operated switch for controlling the motor of 'a suction fan which is mounted within an air discharge conduit leading to an atmosphere vent, the discharge pipe being in communication with the usual flush pipe of the bowl through the medium of the overflow pipe of the flush tank.

A further object is to provide a toilet bowl ventilating apparatus that can be installed with respect to standard ush tank toilet equipment with minimum change to the structure thereof.

Another object is to provide a toilet bowl ventilating apparatus that is simple in construction, easy to install, inexpensive to manufacture, and extremely eiiicienti in operation, use and service.

vThis invention also consists in certain'other features of construction and in the combination andV arrangement of the several parts, to be hereinafter fully described, illustrated in the accom# pfanying drawing and specifically pointed out in the'appended claims. y

l In describing the invention in detail, reference willbe had to the accompanying' drawing wherein like rcharacters denote like or corresponding partsv throughout the several views, and in which:

Figure 1 is a fragmentary Vfront view, partly in section and illustrates my apparatus installed for use with standard ush tank toilet equipment.

Figure 2 is a fragmentary side elevation illustrating the association of the air discharge conduit with respect to the overflow pipe.

Figure 3 is a sectional view taken through the switch and illustrates the same applied tothe seat of the toilet bowl.

Figure 4 is a view of the switch with the cover of the casing thereof removed.

Referring to the drawing in detail, the letter A indicates the toilet bowl, B the seat therefor and C the flush or water discharge pipe leading from the tank D to the bowl, the pipe C having the usual overflow pipe E formed laterally thereon and rising therefrom. The flush pipe C is controlled by the usual float valve F and the float controlled water inlet valve GA is equipped with the usual after-fill pipe H to provide the water seal within the bowl. It will be understood that all of this structure is standard equipment and is shown merely to illustrate the relation of my apparatus therewith.

My apparatus in the yform shown includes a substantially semi-spherical cup I provided .with a collar flange 2 sleeved on and fixed to the upper end portion of the overflow pipe E for disposal of the rim of the cup above the upper end thereof, and the cup has mounted therein the outlet end of the pipe I-I, so that the cup will b'e retained lled with water at a, level flush with the upper end ofthe pipe E,.as'will be apparent upon inspection Vof Figure 1.

Extending into the cup l in spaced relation for disposal about' and slightly below the yupper end of the pipe E, tobe sealed by the water in the cup, is the lower end of a double elbow section 3 of an air or odor discharge conduit, the section 3 extending throughv the rear wall of the tank and has telescopically mounted on the upper end thereof the cylindrical inner portion 4 of a housing for a suction fan. The upper or outlet section 5 of the discharge conduit is telescopically mounted within the cylindrical portion 4' which together with an inner housing member 4' connects the members 3 and 5 in communication with each other, and in order to provide a leakproof connection between the sections and the portion 4 and inner housing memberl, I provide gaskets 6 surrounding the ends of the inner housing member 4 and bearing against the confront--v ing ends of the sections, as clearly shown in Figure 1.

Mounted and secured vertically within the inner housing member 4' is the'suction fan which includes a relatively narrow substantially oval shaped motor 1 having its armature shaft extending through both ends thereof and fixed to the ends of the armature shaft areA suction blades B for drawing air and consequently olensive odor from the bowl, through the medium of the ush pipe C, overflow pipev E and the elbow section 3 for passage of the air through the inner housing member 4 and the outlet section 5, the latter being connected to an atmosphere Vent pipe, not shown, or the section 5 may extend directly to the atmosphere for directing the air thereto, as will be apparent.

The switch for automatically controlling the fan includes an elongated relatively fiat rectangular casing 9 provided with a removable cover I0 that may be xed in closed position by any suitable means, the casing and cover being made from insulating material and the casing is fixed to the underside of the seat B by screws or the like, as best shown in Figure 3. Mounted between its ends in and for disposal between bearings I! for rocking movement, is a substan-l tially T-shaped contact arm I2 having one end xed within a knob I3 of rubber or other suitable cushioning material and which extends through an opening in the cover I for disposal in abutting relation with the bowl, as clearly Ashown in Figure 3, the knob being vspring pressed for normally urging the same outwardly of the casing, for holding the opposite or cross member end I4 of the arm I2 spaced from a pair of parallel strip contact members I 5 that are embedded and xed within the casing for disposal in the path of the end member I4, for the latter to bridge the contact members I5 to close the circuit to the fan, when the seat is occupied, as

will be apparent upon inspection of Figures 1 and 3.

The contact members I5 have one ofltheV ends 22extending to the other conductorV 2.3 of the house circuit. i A v.

From the above description and the disclosure in the drawing, it will be obvious that when the seat is occupied, the circuit to the fan is closed and the latter will remove foul air and offensive odor from the bowl and-the 'surrounding area. It will be` further obvious that the housing 24 which includes the cylindrical inne'rportion 4 tends Vto deaden the noise of the' fan; so that the apparatus `is substantially noiseless 1t is `thought from the foregoing description that the advantages-and novel features invention will be readilyV apparent.

' It is to be `understood'that changes may be made' in the construction and in the combination and arrangement of the vseveral parts, provided that such changes Afall within `the scope of the appended claims.

What I claim is: p A Y. l. .A Ventilating apparatus vfor a iiush tank equipped toilet bowl, an overow pipe for the tank and communicating withy the bowl, a pipe for supplying water to the overow'pipajand said apparatus comprising a water receptacle secured to andsurroun'ding the overflow pipe yto extend above the upper end thereof, said recep-A tacle having the outlet end ofthe water supply pipe extending therein to maintain water -Within the receptacle at jalltimes, an air 4conduit including a section having its inlet end `mounted in the 'receptacle about and below the upper end ofthe overow pipe for disposal ,below the level of the water within the receptacle, a second section for the conduit and communicating with the atmosphere, a housing including a cylindrical portion sleeved on the sections, an inner housing member mounted within the cylindrical portion and the sections, gaskets surrounding the ends of the inner housing member and cooperating therewith and the cylindrical portion to provide a leakproofconnection for the sections, a

motor driven suction means within the inner housing member, and switch means in circuit with the motor for controlling the latter.

2. A Ventilating apparatus for a flush tank equipped toilet bowl, an overow pipe for the tank and-communicating with the bowl, a pipe for supplying water to the overflow pipe, and

said apparatus comprising a substantially semispherical cup, an annular flange formed on the cup and securedk to and surrounding the Aoveriiow pipe fordisposing `the rirn of the cupabove the 'upper .end of the overflow pipe, said cup having the outlet end of the water supply pipe extending therein tov maintainv water within the receptacle at all times, an air conduit having its inlet end mounted in the cup about and below the upper end of thexo'verflow pipe for disposal below the level ofthe water within the receptacle, motor driven suction means within the conduit, and a switch in circuitwwith the motor for controlling the latter.

3. A Ventilating apparatus for 'a flush tank equipped 'toilet bowl, an overflow pipe for the `tank and communicating with the bowl, a pipe below the level of the water within the receptacle,

an outlet section communicating with the atmosphere and having .oneV end `Aaligned with the outer end lof the inlet section, a housing including a cylindricalA portion connecting the aligned ends oflthe vsections together, motor driven suction meansy within the cylindrical portion, and a switch` in circuit with the motor for controlling the latter.

` HENRY JENTZER. 

